OVRO Search for Binary Protostars (Launhardt, Sargent & Zinnecker 2000) This OVRO program "aims at sub-arcsecond resolution corresponding to linear resolutions of 150 to 450 AU." Later, with ALMA, the aim is to achieve "0.1 arcsec resolution, or 15 - 45 AU, close to the peak of the pre-main sequence binary separation distribution." Bok Globule CB 230 (L 1177) ==>

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^*Remember that at 1 kpc, 1000 AU subtends 1 arcsecond.

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